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Article
Engineering, Industrial
Gregory Levitin et al.
Summary: Motivated by real-world applications, this paper presents a model for a heterogeneous standby system with n components, which can be allocated to different positions and are subject to random shocks. The system's mission success probability depends on the allocation and activation sequence of components. The paper proposes a joint optimal allocation and activation sequence (AAS) problem and presents a new numerical algorithm and genetic algorithm for solving it. A case study of a multi-UAV standby system is provided to illustrate the proposed model and evaluate its solutions.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Engineering, Industrial
Yangyang Wu et al.
Summary: Earthquakes can lead to disruptions in traffic networks, power outages, dislocation of trips, and injuries. In order to transport injured individuals to hospitals in a timely manner and avoid congestion, it is crucial to have redundant routes in the transportation network. This study focuses on improving system resilience by integrating emergency response and mitigation planning to support emergency medical response. A new methodology is developed to quantify the resilience of transportation networks, and the feasibility of a resilience-based pre-hazard mitigation strategy is investigated. The proposed framework is demonstrated in Shelby County, Tennessee.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Mathematics, Interdisciplinary Applications
Bei Xu et al.
Summary: The proposed paper introduces an improved distributed swarm model with a dual-adaptive feedback mechanism to prevent swarm-splitting and improve the probability of reaching the target area. The first feedback mechanism balances goal-oriented and social-oriented behavior of informed agents to maintain navigation accuracy while staying close to neighbors. The second feedback mechanism helps followers adaptively adjust their perception range and select appropriate neighbors based on nearby agents' state. Simulation results demonstrate the superiority of the proposed model compared to existing swarm models in four performance metrics. The proposed model has potential applications in the distributed migration motion of large-scale unmanned swarms, such as navigation and target tracking.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Engineering, Industrial
Jingyi Wu et al.
Summary: This paper presents a Markov resilience assessment framework for Tension Leg Platforms (TLP) under mooring failure, considering internal and external factors. An illustrative example demonstrates the feasibility of the proposed methodology, highlighting the versatility of the Markov framework in handling resilience problems for offshore structure systems.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2023)
Article
Construction & Building Technology
Tong Qiu et al.
Summary: This study investigates the resilience of precast underground stations (PUSs) with a large-span roof structure in multi-hazard urban environments. A joint vulnerability function and a restorability function are established to assess the physical and community resilience of PUSs. The results show the inherent sensitivity of PUS schemes and the importance of considering both engineering and community factors.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2022)
Article
Engineering, Industrial
Tao Liu et al.
Summary: This research focuses on the modeling and evaluation method for the resilience of multi-state networks, proposing a semi-Markov-based resilience model and a fast-repeated algorithm to enhance the evaluation efficiency. The proposed method offers more flexible and timely strategies for the design, operation, and recovery of multi-state networks.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2022)
Article
Engineering, Industrial
Xiaoyue Wang et al.
Summary: This paper investigates capability-balanced systems operating in a multi-source shock environment and defines the concept of system capability balance. A two-stage finite Markov chain imbedding approach and PH distribution are used to evaluate the probabilistic quantities of the system. Illustrative examples are provided to validate the proposed model and future studies are discussed.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2022)
Article
Engineering, Civil
Yiming Li et al.
Summary: This paper proposes a framework to assess the life cycle resilience of RC structures under multi-hazards. The results show that corrosion increases the seismic risk and decreases the resilience of buildings.
Article
Engineering, Civil
Nariman L. Dehghani et al.
Summary: The paper proposes a Markovian LCC framework that reduces computational costs of probabilistic LCC analysis for large systems and enhances LCC estimates accuracy by capturing damage accumulations and incorporating uncertainties in downtimes associated with damage states. The framework is applied to estimate the LCC of a bridge in a seismic zone and finds that neglecting effects of damage accumulation and partial improvements in repair efforts can lead to significant underestimation or overestimation of hazard-induced LCC.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2021)
Article
Engineering, Industrial
Yao Cheng et al.
Summary: This study discusses the quantification of resilience of engineered systems and critical infrastructures under multi hazard conditions, utilizing piecewise functions and stochastic performance metrics to address uncertainty, with extensive simulation studies and a numerical example provided to validate the effectiveness and applicability of the proposed resilience models.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Industrial
Wenjie Dong et al.
Summary: The study developed generalized reliability models for multi-component systems, introducing damage improvement and damage aggravation coefficients to extend the standard cumulative shock damage model. Analytical representations of system reliability for series-parallel systems and parallel-series systems were derived, with the Nelder-Mead downhill simplex method used to find the optimal replacement intervals.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Industrial
Jia Wang et al.
Summary: In this paper, the consequences of random shocks on engineering systems at different degradation stages are modeled by dividing the system's entire life into four stages. Adjustment coefficients are used to express the cumulative damage of shocks toward the degradation rate, and a hybrid degradation and shock model is developed to estimate reliability. The proposed model can characterize the influence of shocks in different degradation stages and reasonably estimate the reliability.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Industrial
Junqing Tang et al.
Summary: This study examines the resilient performance of urban rail transit systems in Singapore and Chongqing, China by comparing the effectiveness of providing bus-bridging services and identifying the impact of interchange station locations on system resilience. The research indicates that attacking interchange stations may not always result in extensive resilience loss, and numerical simulations show that the positive effect of bus-bridging strategy varies between systems.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Industrial
Gregory Levitin et al.
Summary: This paper focuses on failure-driven and condition-driven mission abort and rescue in systems with arbitrary structures. The system elements have varying resistance to shocks, and a probabilistic approach is suggested for evaluating mission success probability and system survival probability.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Industrial
Congshan Wu et al.
Summary: This paper investigates the optimal mission abort policy for the k-out-of-n: F balanced system performing a specific mission continuously. Probability indexes and optimization models are derived, with a case study provided to demonstrate the results.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Industrial
Zhiguo Zeng et al.
Summary: This paper presents a generic framework for resilience modeling and analysis of multistate energy systems, developing a multistate resilience model based on a Markov reward process model and defining four numerical metrics. By using a simulation-based algorithm, resilience modeling and analysis of a Nuclear Power Plant under the threat of earthquakes were successfully conducted, demonstrating the ability of the model to comprehensively describe the resilience of multistate energy systems under the threats of extreme events.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2021)
Article
Engineering, Civil
Somayajulu L. N. Dhulipala et al.
Summary: State-dependent models are used to represent system recovery as stochastic transitions. A generalized recovery modeling framework has been developed to forecast systems recovery under multiple hazards. Markov-type processes are applied to hind-cast and forecast post-event trajectories, as well as model system-of-systems recovery.
Article
Engineering, Industrial
Xiaoyue Wang et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2020)
Article
Engineering, Industrial
Xian Zhao et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2020)
Article
Engineering, Industrial
Somayajulu L. N. Dhulipala et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2020)
Article
Engineering, Industrial
Xuefeng Kong et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2020)
Article
Engineering, Industrial
Somayeh Hamed Ranjkesh et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2019)
Article
Mathematics, Applied
Murat Ozkut et al.
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2019)
Article
Management
Gregory Levitin et al.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2018)
Article
Engineering, Industrial
Gregory Levitin et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2018)
Article
Engineering, Industrial
Xian Zhao et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2018)
Article
Engineering, Industrial
Zhao Xian et al.
RELIABILITY ENGINEERING & SYSTEM SAFETY
(2018)
Article
Chemistry, Analytical
Jia Qi et al.
Article
Automation & Control Systems
Xiwei Qiu et al.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2016)
Article
Computer Science, Hardware & Architecture
Yan-Hui Lin et al.
IEEE TRANSACTIONS ON RELIABILITY
(2015)
